/*
 * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <arch_helpers.h>
#include <arm_gic.h>
#include <assert.h>
#include <bl_common.h>
#include <debug.h>
#include <mmio.h>
#include <platform.h>
#include <platform_def.h>
#include <xlat_tables.h>

#include "../hikey_def.h"

#define MAP_DDR        MAP_REGION_FLAT(DDR_BASE,            \
                    DDR_SIZE,            \
                    MT_DEVICE | MT_RW | MT_NS)

#define MAP_DEVICE    MAP_REGION_FLAT(DEVICE_BASE,            \
                    DEVICE_SIZE,            \
                    MT_DEVICE | MT_RW | MT_SECURE)

#define MAP_ROM_PARAM    MAP_REGION_FLAT(XG2RAM0_BASE,            \
                    BL1_XG2RAM0_OFFSET,        \
                    MT_DEVICE | MT_RO | MT_SECURE)

#define MAP_SRAM    MAP_REGION_FLAT(SRAM_BASE,            \
                    SRAM_SIZE,            \
                    MT_DEVICE | MT_RW | MT_SECURE)

/*
 * BL1 needs to access the areas of MMC_SRAM.
 * BL1 loads BL2 from eMMC into SRAM before DDR initialized.
 */
#define MAP_MMC_SRAM    MAP_REGION_FLAT(HIKEY_BL1_MMC_DESC_BASE,    \
                    HIKEY_BL1_MMC_DESC_SIZE +    \
                    HIKEY_BL1_MMC_DATA_SIZE,    \
                    MT_DEVICE | MT_RW | MT_SECURE)

/*
 * Table of regions for different BL stages to map using the MMU.
 * This doesn't include Trusted RAM as the 'mem_layout' argument passed to
 * hikey_init_mmu_elx() will give the available subset of that,
 */
#if IMAGE_BL1
static const mmap_region_t hikey_mmap[] = {
    MAP_DEVICE,
    MAP_ROM_PARAM,
    MAP_MMC_SRAM,
    {0}
};
#endif

#if IMAGE_BL2
static const mmap_region_t hikey_mmap[] = {
    MAP_DDR,
    MAP_DEVICE,
    {0}
};
#endif

#if IMAGE_BL31
static const mmap_region_t hikey_mmap[] = {
    MAP_DEVICE,
    MAP_SRAM,
    {0}
};
#endif

/*
 * Macro generating the code for the function setting up the pagetables as per
 * the platform memory map & initialize the mmu, for the given exception level
 */
#define HIKEY_CONFIGURE_MMU_EL(_el)                \
    void hikey_init_mmu_el##_el(unsigned long total_base,    \
                  unsigned long total_size,    \
                  unsigned long ro_start,    \
                  unsigned long ro_limit,    \
                  unsigned long coh_start,    \
                  unsigned long coh_limit)    \
    {                            \
           mmap_add_region(total_base, total_base,        \
                   total_size,            \
                   MT_MEMORY | MT_RW | MT_SECURE);    \
           mmap_add_region(ro_start, ro_start,        \
                   ro_limit - ro_start,        \
                   MT_MEMORY | MT_RO | MT_SECURE);    \
           mmap_add_region(coh_start, coh_start,        \
                   coh_limit - coh_start,        \
                   MT_DEVICE | MT_RW | MT_SECURE);    \
           mmap_add(hikey_mmap);                \
           init_xlat_tables();                \
                                \
           enable_mmu_el##_el(0);                \
    }

/* Define EL1 and EL3 variants of the function initialising the MMU */
HIKEY_CONFIGURE_MMU_EL(1)
HIKEY_CONFIGURE_MMU_EL(3)

unsigned long plat_get_ns_image_entrypoint(void)
{
    return HIKEY_NS_IMAGE_OFFSET;
}

unsigned int plat_get_syscnt_freq2(void)
{
    return 1200000;
}
